Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 5th Sem New 2151908 Control Engineering Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2151908 Date: 18/12/2019
Subject Name: Control Engineering
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) What is control Engineering ? Claassify it 03
(b) What is state space analysis in control engineering ? explain advantage of state
variable method over conventional one.
04
(c) Determine the system equations for the physical system shown in figure 1.c
figure 1cffigure.
07
Q.2 (a) Derive equation of transfer function for closed loop control system 03
(b) What is analogues system ? Explain force voltage analogy 04
(c) Reduce block diagram by block reduction technique and find the overall transfer
function in figure 2c
07
OR
(c) Apply masons rule and find the transfer function for following figure.2c (or) 07
Q.3 (a) Explain standard test signals used in control engineering 03
(b) For a first oder system with unit step input find the steady state error and explain
it
04
(c) A unity feed back control system has an open loop transfer function G(s) =
5/s(s+1) find the peak time, rise time, percentage overshoot settling time for step
input of 20 units. Also determine the peak overshoot.
07
OR
Q.3 (a) Define position error constant, velocity error constant , Acceleration error
constant.
03
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2151908 Date: 18/12/2019
Subject Name: Control Engineering
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) What is control Engineering ? Claassify it 03
(b) What is state space analysis in control engineering ? explain advantage of state
variable method over conventional one.
04
(c) Determine the system equations for the physical system shown in figure 1.c
figure 1cffigure.
07
Q.2 (a) Derive equation of transfer function for closed loop control system 03
(b) What is analogues system ? Explain force voltage analogy 04
(c) Reduce block diagram by block reduction technique and find the overall transfer
function in figure 2c
07
OR
(c) Apply masons rule and find the transfer function for following figure.2c (or) 07
Q.3 (a) Explain standard test signals used in control engineering 03
(b) For a first oder system with unit step input find the steady state error and explain
it
04
(c) A unity feed back control system has an open loop transfer function G(s) =
5/s(s+1) find the peak time, rise time, percentage overshoot settling time for step
input of 20 units. Also determine the peak overshoot.
07
OR
Q.3 (a) Define position error constant, velocity error constant , Acceleration error
constant.
03
(b) Derive the equation for peak time , rise time, and for second order system for
underdamped system
04
(c) The control system shown in figure 3 b. employs proportional plus error rate
control. Determine the value of error rate constant Ke, so that damping ratio is
0.5. Determine the value of settling time, maximum overshoot . Find the steady
state error if the input is unit ramp input.
07
Q.4 (a) Explain nozzle flapper amplifier 03
(b) Explain basic hydraulic system component and draw any circuit showing at least
six components
04
(c) Explain pneumatic proportional plus integral control action and obtain its
transfer function.
07
OR
Q.4 (a) Differentiate hydraulic and pneumatic control system 03
(b) Explain 3/2 DCV, 3/3 DCV , directional control valve with its construction
figure.
04
(c) Obtain the transfer function for hydraulic system with proportional plus integral
plus derivative control action.
07
Q.5 (a) Explain terms; stable system, unstable system, marginally stable system 03
(b) Write a short not on bode plot 04
(c) For a system having characteristic polynomial S
6
+ 4S
5
+16S
3
+41S
2
+36S +72
discuss about the stability criteria using routh stability theory.
07
OR
Q.5 (a) Explain terms; critically stable system, conditionally stable system, relative
stability
03
(b) Write a short note on Niquest stability criteria. 04
(c) Sketch the root locus of the system whose open loop transfer function is G(s) =
K/S(S+1)(S+3) , determine the value of K for damping ratio equal 0.5
07
FirstRanker.com - FirstRanker's Choice
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2151908 Date: 18/12/2019
Subject Name: Control Engineering
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) What is control Engineering ? Claassify it 03
(b) What is state space analysis in control engineering ? explain advantage of state
variable method over conventional one.
04
(c) Determine the system equations for the physical system shown in figure 1.c
figure 1cffigure.
07
Q.2 (a) Derive equation of transfer function for closed loop control system 03
(b) What is analogues system ? Explain force voltage analogy 04
(c) Reduce block diagram by block reduction technique and find the overall transfer
function in figure 2c
07
OR
(c) Apply masons rule and find the transfer function for following figure.2c (or) 07
Q.3 (a) Explain standard test signals used in control engineering 03
(b) For a first oder system with unit step input find the steady state error and explain
it
04
(c) A unity feed back control system has an open loop transfer function G(s) =
5/s(s+1) find the peak time, rise time, percentage overshoot settling time for step
input of 20 units. Also determine the peak overshoot.
07
OR
Q.3 (a) Define position error constant, velocity error constant , Acceleration error
constant.
03
(b) Derive the equation for peak time , rise time, and for second order system for
underdamped system
04
(c) The control system shown in figure 3 b. employs proportional plus error rate
control. Determine the value of error rate constant Ke, so that damping ratio is
0.5. Determine the value of settling time, maximum overshoot . Find the steady
state error if the input is unit ramp input.
07
Q.4 (a) Explain nozzle flapper amplifier 03
(b) Explain basic hydraulic system component and draw any circuit showing at least
six components
04
(c) Explain pneumatic proportional plus integral control action and obtain its
transfer function.
07
OR
Q.4 (a) Differentiate hydraulic and pneumatic control system 03
(b) Explain 3/2 DCV, 3/3 DCV , directional control valve with its construction
figure.
04
(c) Obtain the transfer function for hydraulic system with proportional plus integral
plus derivative control action.
07
Q.5 (a) Explain terms; stable system, unstable system, marginally stable system 03
(b) Write a short not on bode plot 04
(c) For a system having characteristic polynomial S
6
+ 4S
5
+16S
3
+41S
2
+36S +72
discuss about the stability criteria using routh stability theory.
07
OR
Q.5 (a) Explain terms; critically stable system, conditionally stable system, relative
stability
03
(b) Write a short note on Niquest stability criteria. 04
(c) Sketch the root locus of the system whose open loop transfer function is G(s) =
K/S(S+1)(S+3) , determine the value of K for damping ratio equal 0.5
07
**********
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This post was last modified on 20 February 2020